読み終わってなんか…えぇ…ってなったな😕

Everything is fine, but there is one major inconsistency. She was ready to leave you for someone else. She was already ready to break up. It means she no longer has feelings for you, or they are extremely superficial. Even if you have reconciled now, this can easily happen again. She'll just like someone else again. I would have broken up with her without hesitation.